That's all folks!

Below are the questions asked in the 24 April 2011 #DAQA session, before the official cut-off at around ten past nine that night. Note that every effort is made to include all questions and answers. However, there are exceptions, namely:

• Extensive back-and-forth replies after the initial question is answered: these are hard to keep track of, as multiple individuals may join a discussion. To see more on any point, simply search on Twitter.
• Obviously-disruptive questions: for example if someone is clearly heckling or disrupting the session rather than seeking a debate or answer. 
• Having an ulterior motive e.g. someone trying to promote a product or service.
• Duplicate questions, especially from the same person.

If any questions have been unintentionally left out, please comment on this post with details. If any answers have been unintentionally left out, please comment on the relevant post.